JD MM2 J-Head Barrel Fan Duct

youmagine

This design is specifically tailored for use with ABS. For PLA users, a fan system that cools the part and barrel would be ideal or an alternative fan duct system could be utilized to provide additional cooling capabilities.The mounting faces of this system are designed to securely fasten onto the build platform. Although the intake duct may be optional, it effectively eliminates intake wash compared to previous fan duct designs.This design should be possible to build without any support material. The parts have been engineered with 0.5mm extrusion line widths in mind/edit: This experiment was not entirely successful. A barrel fan duct is not necessary for ABS single extrusion, and the exhaust turbulence caused issues with thin parts at the far end (Y+ end). Consequently, I haven't updated it. However, I did repurpose the intake duct.I have achieved noticeable performance improvements by employing this design along with special ducts to prevent exhaust turbulence from impacting the part being built: https://www.youmagine.com/designs/barrel-cooling-duct-for-mendelmax-2-jd-dually-belt-driven-extruder